diff --git a/lib/common.lib.php b/lib/common.lib.php
index 6018674ce..ecedd1c34 100644
--- a/lib/common.lib.php
+++ b/lib/common.lib.php
@@ -2766,6 +2766,8 @@ class html_process {
             $buffer = preg_replace('#(<title[^>]*>.*?</title>)#', "$meta_tag{$nl}$1", $buffer);
         }
 
+        $buffer = run_replace('html_process_buffer', $buffer);
+
         return $buffer;
     }
 }